Hazardous Materials (HM)

Hazardous materials (HM) are defined as any material that is capable of causing serious injury or death if released into the environment. HM can be divided into two categories: 1) those which pose a significant risk to human health and 2) those which pose a threat to the environment. The former category includes chemicals, biological agents, radioactive substances, and other potentially hazardous materials. The latter category consists of toxic wastes, flammables, corrosives, explosives, and other dangerous substances.